nanog mailing list archives
Re: Vonage Selects TCS For VoIP E911 Service
From: Joel Jaeggli <joelja () darkwing uoregon edu>
Date: Wed, 20 Jul 2005 09:46:22 -0700 (PDT)
On Wed, 20 Jul 2005, Alex Rubenstein wrote:
GPS does not work through the fuselage of a aluminum airplane. I've tried. More than once.
The gps carrier frequency is 1575.42mhza decent gps antenna is unfortunately a bit larger than most small gps recivers let alone cellphones. multipath cancelation is a serious issue when dealing with gps, and being in a aluminum tube mailer, under tree cover or inside commercial construction doesn't help your situation when all you have is a tiny patch antenna printed on a pcb.
On Wed, 20 Jul 2005 Michael.Dillon () btradianz com wrote:If a person is calling 911 from a plane in flight, are we really so concerned about which PSAP receieves the call? The last known fix would likely have been the point of origin in any case...If a picocell on board an airplane receives an E911 call, it shouldn't route it to any PSAP. The first responders in this situation are the flight attendants so it should ring the flight attendant's phone. By the way, if GPS works in the air for small aircraft pilots, then why wouldn't it work for cellphones? The last known fix should be 100% up to date and 100% useless. --Michael Dillon
-- -------------------------------------------------------------------------- Joel Jaeggli Unix Consulting joelja () darkwing uoregon edu GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2
Current thread:
- Re: Vonage Selects TCS For VoIP E911 Service, (continued)
- Re: Vonage Selects TCS For VoIP E911 Service Andre Oppermann (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Brad Knowles (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Pete Templin (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Jeffrey I. Schiller (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Brad Knowles (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Michael . Dillon (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service David Barak (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Ryuichi TAKASHIMA (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Michael . Dillon (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Alex Rubenstein (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Joel Jaeggli (Jul 20)
- Re: Vonage Selects TCS For VoIP E911 Service Stephen Sprunk (Jul 20)